Stampede Dam and dike structures in California, US, are being raised by 11.5ft to address dam safety concerns related to large flood events.

In addition to the work, two small dikes will be constructed near the south end of the reservoir to fill low-lying areas of the reservoir rim. The spillway crest structure will be reconstructed to control outflows during large flood events to the current spillway discharge capacity of approximately 3000 cubic feet per second.

The construction contract for this work was awarded in May 2016 to NW Construction Incorporated (NW). NW will mobilize to Stampede Dam in August 2016 to begin preliminary construction activities.

Completed in 1970, Stampede Dam is a zoned earthfill embankment dam located approximately 11 miles northeast of Truckee, California, in Sierra County.